vloopback module won't compile from vloopback-source

[Paul Stimpson]

Attempting to make the module from vloopback-source fails with the error:

make[1]: Entering directory `/usr/src/linux-headers-2.6.38-10-generic-pae'
  CC [M] /home/paul/Downloads/dv4l/vloopback-1.3/vloopback.o
/home/paul/Downloads/dv4l/vloopback-1.3/vloopback.c:180:2: error: #error "need CONFIG_VIDEO_V4L1_COMPAT"
/home/paul/Downloads/dv4l/vloopback-1.3/vloopback.c:204:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.

This program used to compile fine on 10.10

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: vloopback-source 1.3-2
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Uname: Linux 2.6.38-10-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sat Jul 16 02:53:31 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: vloopback
UpgradeStatus: No upgrade log present (probably fresh install)

[ravenclaw_78 (ravenclaw-78)]

still fails for me (Ubuntu 11.10 , 3.0.0-12-server)

It seems that 'include/linux/videodev.h' is removed from kernel >=2.6.38. (https://bbs.archlinux.org/viewtopic.php?pid=930462#p930462)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Norbert Brondeau (norbert-brondeau-deactivatedaccount)]

  svn co http://www.lavrsen.dk/svn/vloopback/trunk/ vloopback
  cd vloopback

build using v4l-utils headers

   sed -i 's/<linux\/\(videodev.h\)>/"libv4l1-\1"/' *.c example/*.c

remove old API

   sed -e '/CONFIG_VIDEO_V4L1_COMPAT/,+2d' -e 's/BASE_VIDIOCPRIVATE/192/' -e '/VIDIOCGUNIT:/,+18d' -e '/VIDIOCKEY/,+1d' -i vloopback.c example/dummy.c

whereis libv4l1-videodev.h
libv4l1-videodev: /usr/include/libv4l1-videodev.h
cp /usr/include/libv4l1-videodev.h ./

make
make -C /lib/modules/3.0.0-14-generic/build SUBDIRS=/home/walter/Downloads/vloopback modules
make[1]: entrant dans le répertoire « /usr/src/linux-headers-3.0.0-14-generic »
  CC [M] /home/walter/Downloads/vloopback/vloopback.o
In file included from /usr/lib/gcc/i686-linux-gnu/4.6.1/include/stdint.h:5:0,
                 from /home/walter/Downloads/vloopback/libv4l1-videodev.h:6,
                 from /home/walter/Downloads/vloopback/vloopback.c:217:
/usr/lib/gcc/i686-linux-gnu/4.6.1/include/stdint-gcc.h:86:26: erreur: conflicting types for ‘uintptr_t’
include/linux/types.h:44:24: note: previous declaration of ‘uintptr_t’ was here
make[2]: *** [/home/walter/Downloads/vloopback/vloopback.o] Erreur 1

I don't know what, but vloopback refuse to be conpiled.
You must change the line #include <stdint.h> to //#include <stdint.h> of the file libv4l1-videodev.h

make
make -C /lib/modules/3.0.0-14-generic/build SUBDIRS=/home/walter/Downloads/vloopback modules
make[1]: entrant dans le répertoire « /usr/src/linux-headers-3.0.0-14-generic »
  CC [M] /home/walter/Downloads/vloopback/vloopback.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC /home/walter/Downloads/vloopback/vloopback.mod.o
  LD [M] /home/walter/Downloads/vloopback/vloopback.ko
make[1]: quittant le répertoire « /usr/src/linux-headers-3.0.0-14-generic »
make -C example
make[1]: entrant dans le répertoire « /home/walter/Downloads/vloopback/example »
cc -g -Wall invert.c -o invert
cc -g -Wall resize.c -o resize
cc -g -Wall feed.c -o feed
cc -g -Wall dummy.c -o dummy
dummy.c: In function ‘open_vidpipe’:
dummy.c:282:8: attention : variable ‘ostatus’ set but not used [-Wunused-but-set-variable]
dummy.c:278:8: attention : variable ‘loop’ set but not used [-Wunused-but-set-variable]

sudo make install
sudo modprobe vloopback
lsmod | grep vloopback
vloopback 17806 0
videodev 85626 2 vloopback,uvcvideo

[f mds (fmds)]

My webcam uvcvideo: Found UVC 1.00 device CNF7129 (04f2:b071) was reversed after the installation vloopback, and the command export LIBV4LCONTROL_FLAGS=3 && LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so skype , was normal.

To (norbert-brondeau):
Thank you .

in Brazil, translate google!

Ubuntu 12.04 64bit